Wildlife corridor

Wildlife corridor

A wildlife corridor or green corridor[1] is an area of habitat connecting wildlife populations separated by human activities (such as roads, development, or logging). This allows an exchange of individuals between populations, which may help prevent the negative effects of inbreeding and reduced genetic diversity (via genetic drift) that often occur within isolated populations. Corridors may also help facilitate the re-establishment of populations that have been reduced or eliminated due to random events (such as fires or disease). This may potentially moderate some of the worst effects of habitat fragmentation.[2]

Wildlife corridors are susceptible to edge effects; habitat quality along the edge of a habitat fragment is often much lower than in areas further from the habitat edge. Wildlife corridors are important for large species requiring significant sized ranges; however, they are also vital as connection corridors for smaller animals and plants as well as ecological connectors to provide a rescue effect.

Contents

Wolf corridor

In 2001, a wildlife corridor was restored through a golf course in Jasper National Park, Alberta, which enabled wolves to pass through the course. After this restoration, wolves passed through the corridor frequently.[3] This is one of the first demonstrations that corridors are used by wildlife, and can be effective in decreasing fragmentation. Earlier studies had been criticised for failing to demonstrate that corridor restoration leads to a change in wildlife behaviour.[4]

Bird wildlife corridors

One common example of bird species' ranges are land mass areas bordering water bodies, for example oceans, rivers, or lakes, and called a coastal strip. A second example, some species of bird depend on water, usually a river, swamp, etc., or water related forest and live in a river corridor. A separate example of a river corridor would be a river corridor that includes the entire drainage, having the edge of the range delimited by mountains, or higher elevations; the river itself would be a smaller percentage of this entire wildlife corridor, but the corridor is created because of the river.

A further example of a bird wildlife corridor would be a mountain range corridor. In the U.S. of North America, the Sierra Nevada range in the west, and the Appalachian Mountains in the east are two examples of this habitat, used in summer, and winter, by separate species, for different reasons.

Bird species in these corridors are either connected to a main range for the species, (be contiguous), or in an isolated geographic range and be a disjunct range. Birds leaving the area, if they migrate would either leave connected to the main range, or have to fly over land not connected to the wildlife corridor, and thus be passage migrants over land that they stop on for an intermittent, hit or miss, visit.

Elephant corridor

Elephant corridors are narrow strips of land that allow elephants to move from one habitat patch to another. There are 88 identified elephant corridors in India.

Designing wildlife corridors

According to new research, wildlife corridors are best built with a certain degree of randomness or asymmetry, rather than built symmetrically. The research was conducted at UC Davis.[5]

Major wildlife corridors

Several artificial wildlife corridors have been created, these include:

  • the Paséo Pantera (also known as the MesoAmerican Biological corridor or Paséo del Jaguar)
  • the Eastern Himalayan Corridor
  • China-Russia Tiger Corridor
  • Tandai Tiger Corridor [6]
  • the European Green Belt
  • The Siju-Rewak Corridor, located in the Garo Hills of India, protects an important population of elephants(thought to be approximately 20% of all the elephants that survive in the country).This corridor project links together the Siju Wildlife Sanctuary and the Rewak Reserve Forest in Meghalaya State, close to the India-Bangladesh border. This area lies within the meeting place of the Himalayan Mountain Range and the Indian Peninsula and contains at least 139 other species of mammal, including Tiger, Clouded Leopard and the Himalayan Black Bear.
  • the Ecologische Hoofdstructuur is a network of corridors and habitats created for wildlife in the Netherlands [7]

See also

References

  1. ^ Planning Portal - Glossary: G
  2. ^ Bond, M. 2003. Principles of Wildlife Corridor Design. Center for Biological Diversity http://www.biologicaldiversity.org/publications/papers/wild-corridors.pdf
  3. ^ Shepherd, B., and J. Whittington 2006. Response of wolves to corridor restoration and human use management. Ecology and Society 11(2): 1. [online] URL: http://www.ecologyandsociety.org/vol11/iss2/art1/
  4. ^ Daniel K. Rosenberg, Barry R. Noon and E. Charles Meslow. 1997. Biological Corridors: Form, Function, and Efficacy. BioScience, Vol. 47, No. 10, AIBS: The First 50 Years (Nov., 1997), pp. 677-687 http://www.jstor.org/stable/view/1313208?seq=1
  5. ^ Designing wildlife corridors
  6. ^ Corridor initiatives by Panthera: Eastern Himalayan Corridor, China-Russia Tiger Corridor and Tandai Tiger Corridor
  7. ^ Ecologische Hoofdstructuur
  8. ^ Ecologische HooGstructuur
  9. ^ Ecologische HooGstructuur plan by Wim Timmermans

External links


Wikimedia Foundation. 2010.

См. также в других словарях:

  • Wildlife crossing — Roads and Habitat Fragmentation Habitat fragmentation occurs when human made barriers such as roads, railroads, canals, power lines, and oil pipelines penetrate and divide wildlife habitat (Primack, 2006). Of these, roads have the most widespread …   Wikipedia

  • Corridor — Contents 1 Entertainment 2 Travel 3 Region/Territory 4 Oth …   Wikipedia

  • Corridor Biologique — L’expression « corridor biologique » (ou Biocorridor) désigne un ou des milieux reliant fonctionnellement entre eux différents habitats vitaux pour une espèce ou un groupe d’espèce (habitats, sites de reproduction, de nourrissage, de… …   Wikipédia en Français

  • Corridor écologique — Corridor biologique L’expression « corridor biologique » (ou Biocorridor) désigne un ou des milieux reliant fonctionnellement entre eux différents habitats vitaux pour une espèce ou un groupe d’espèce (habitats, sites de reproduction,… …   Wikipédia en Français

  • Corridor biologique — L’expression « corridor biologique » (ou « biocorridor ») désigne un ou des milieux reliant fonctionnellement entre eux différents habitats vitaux pour une espèce, une population, une métapopulation[1] ou un groupe d’espèces… …   Wikipédia en Français

  • Corridor climatique — Un « corridor » ou « couloir » climatique est un large corridor biologique destiné à assurer la survie des espèces sauvage en permettant à nouveau leur migration naturelle sur un axe nord sud ou vers des zones d altitude ou… …   Wikipédia en Français

  • Wildlife garden — Joe Pye weed in flower A wildlife garden (or wild garden) is an environment that is attractive to various forms of wildlife such as birds, amphibians, reptiles, insects, mammals and so on. A wildlife garden will usually contain a variety of… …   Wikipedia

  • wildlife — noun ADJECTIVE ▪ abundant ▪ endangered, rare ▪ indigenous, local, native ▪ exotic ▪ …   Collocations dictionary

  • corridor */*/ — UK [ˈkɒrɪdɔː(r)] / US [ˈkɔrɪˌdɔr] noun [countable] Word forms corridor : singular corridor plural corridors 1) a) a long passage inside a building with doors on each side a hotel/hospital corridor I went along the corridor to her office. b) a… …   English dictionary

  • corridor — cor|ri|dor [ kɔrı,dɔr ] noun count * 1. ) a long passage inside a building with doors on each side: a hotel/hospital corridor I walked down the corridor to her office. a ) a passage on a train 2. ) a long narrow area of land that people or… …   Usage of the words and phrases in modern English


Поделиться ссылкой на выделенное

Прямая ссылка:
Нажмите правой клавишей мыши и выберите «Копировать ссылку»